X-ray diagnostic installation for fluoroscopy and photography

Abstract

In an illustrated embodiment, a switch control handle is shiftable from an upper position to a lower position to disconnect the fluoroscopic x-ray voltage and condition the circuitry for a transition to photographic exposure. Further downward shifting connects the x-ray high voltage until the automatic exposure control terminates the exposure. By coupling the control handle to a selector switch, a single manually adjustable set point potentiometer may select the fluoroscopy voltage set point in the upper position of the handle while adjusting the exposure time for patient constitution in the lower position.

I claim as my invention: 
     
       1. An x-ray diagnostic installation for fluoroscopy and photography, comprising a fluoroscopic voltage adjustment means for adjusting fluoroscopic x-ray voltage,   radiation measuring means for sensing the dose rate during photography,   an automatic exposure timer for determining photographic time, connected with the radiation measuring means, and operable for switching off the x-ray energy upon attaining a predetermined dose, and   a switch for switching over from fluoroscopy to photography, characterized in that a common adjustable set point slement is connected with the fluoroscopic voltage adjusting means for controlling the fluoroscopic voltage while the switch is conditioned for fluoroscopy, and is connectable to the automatic exposure timer for adjustment of the switch-off dose during transition to photography in response to actuation of said switch to switch over to photography.